Above- 30 second video showing how to carve a square
Below- Step by step instruction
Start with a 4″ thick 
Using a layout jig set at 12″, scribe lines parallel to the edge of the block
Do this in both directions
Above- 30 second video showing how to carve a square
Below- Step by step instruction
Using a layout jig set at 12″, scribe lines parallel to the edge of the block
Do this in both directions
Using a 
Turn the ice & cut right next to the second line. (always cut on the outside of the line)